Table 1.
Risk factors of pneumothorax after computed tomography (CT)-guided lung biopsy.
| Characteristic | Pneumothorax Absent | Pneumothorax Present | p Value |
|---|---|---|---|
| Overall | 223 (66) | 115 (34) | |
| Age * | 67.5 ± 12.9 | 69.6 ± 13.3 | 0.172 |
| Age (y) | 0.522 | ||
| <62 | 65 (69) | 29 (31) | |
| ≥62 | 158 (65) | 86 (35) | |
| Sex | 0.909 | ||
| Male | 109(66) | 57 (34) | |
| Female | 114 (66) | 58 (34) | |
| Smoking History | 0.898 | ||
| Smoker | 132 (65) | 71 (35) | |
| Non-Smoker | 63 (64) | 36 (36) | |
| Pack-Years | 0.556 | ||
| <16 | 292 (62) | 18 (38) | |
| 16–29 | 21 (62) | 13 (38) | |
| 30–49 | 25 (66) | 13 (34) | |
| >49 | 36 (69) | 16 (31) | |
| Lesion Size | 0.226 | ||
| ≤1.0 (cm) | 16 (53) | 14 (47) | |
| >1.0 (cm) | 170 (66) | 88 (34) | |
| Lesion Size | 0.709 | ||
| ≤2.0 (cm) | 76 (63) | 44 (37) | |
| >2.0 (cm) | 110 (65) | 58 (35) | |
| Lesion Location | 0.765 | ||
| 1. RUL | 66 (65) | 36 (35) | |
| 2. RML | 17 (85) | 3 (15) | |
| 3. RLL | 42 (63) | 25 (37) | |
| 4. LUL | 42 (65) | 23 (35) | |
| 5. Lingula | 4 (67) | 2 (33) | |
| 6. LLL | 53 (68) | 25 (32) |
Note: Unless otherwise indicated, data are numbers of patients, and data in parentheses are percentages. * Data are mean ± standard deviation. RUL: right upper lobe; RML: right middle lobe; RLL: right lower lobe; LUL: left upper lobe; LLL: left lower lobe.